two smb3 client fixes

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Merge tag '6.15-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - Fix memory leak in mkdir error path

 - Fix max rsize miscalculation after channel reconnect

* tag '6.15-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smb: client: fix zero rsize error messages
  smb: client: fix memory leak during error handling for POSIX mkdir

fs/smb/client/file.c

@@ -160,8 +160,10 @@ static int cifs_prepare_read(struct netfs_io_subrequest *subreq)
 	server = cifs_pick_channel(tlink_tcon(req->cfile->tlink)->ses);
 	rdata->server = server;
 
-	cifs_negotiate_rsize(server, cifs_sb->ctx,
-			     tlink_tcon(req->cfile->tlink));
+	if (cifs_sb->ctx->rsize == 0) {
+		cifs_negotiate_rsize(server, cifs_sb->ctx,
+				     tlink_tcon(req->cfile->tlink));
+	}
 
 	rc = server->ops->wait_mtu_credits(server, cifs_sb->ctx->rsize,
 					   &size, &rdata->credits);

fs/smb/client/smb2pdu.c

@@ -2968,7 +2968,7 @@ replay_again:
 	/* Eventually save off posix specific response info and timestamps */
 
 err_free_rsp_buf:
-	free_rsp_buf(resp_buftype, rsp);
+	free_rsp_buf(resp_buftype, rsp_iov.iov_base);
 	kfree(pc_buf);
 err_free_req:
 	cifs_small_buf_release(req);